Improvement in blind-slat operators



G e s 1" EXW fi tiaittti tant-@simil (ditta.

wegneemt LEVIIW. SWAFFORD, EDWARD BUTLER, AND JOHN R. HESS, OF

f MUSCATINE, IOWA.

Letters Patent No. 83,421, dated Uctober 27, 1868.

IMPROVEMENT IN BLIND-SLAT OPERATORS.

The Bchedu1e-1'eferred to in these Letters Patent and making part of the same.

This invention relates to a new and improved method of operating and adjusting the slats of window-blinds.

In the accompanying plate of drawings- Figure l is a view of the side of the window-casing, with the blind open, showing our invention in position thereon.

Figure 2 is a plan view of the bottom of the windowcasing, showing the device for fastening the blind.

Figure 3 is a front view of a portion of the blind, showing the device for adjusting the movable slats.

Similar letters of reference indicate 'corresponding parts. l

The blind, A, is constructed and secured to the cas-l ing B by hinges, in the ordinary way, as shown.

Upon the hinge-edge of the blind, A, near the bottom, is secured a metallic attachment, C, semi-cylindrical in form, having a spiral slot or threadin the same, as shown in the drawing, said slot extending, vfrom near the bottom of said attachment, upward and around the same.

Said slot is of sufcient depth to receive a ball on the end of the lever D, and is wider within than without, being only of sufficient width at the outside to permit theneck of the lever D to which `said ball is attached v to move freely within the same.

To thesame side of the casing B to which the blind, A, is hinged, is pivoteda metallic lever, D.

The lever D is of suiiicient length to permit of a forward and backward movement to open and close the blinds A, and is provided with a slot ofsuiiioient length for said backward and forward movement on the pivot b, by uli-Jeans of which the lever D is pivoted to the casmg v Near the front end of the lever D, the slots in the same are enlarged, as shownLso as to drop upon the pivot l), to hold the blind open.

Two upright strips a a', provided with slots to receive the levers D and E, are secured to the casing B, to

hold said levers against said casing B.

Upon the bottom of the casing B, andnear the opposite sideof the same to the lever D, is pivoted a horizontal lever, E', as shown, said lever E being provided with a suitable handle at one end, by means of which said lever is moved into and ont om the slot in the blind, B, and is bent upward at the other end soas to engage in a slot in the lower corner of the blind, A, by means of -which the blind is secured when shut, additional secin'ity being given by a hook, e', which, engag- Aingrwith the handle of the lever E', prevents said lever E om moving.

Upon the edge of the lower movable slat of the blind, A, is -:secured a bent metallic arm, G, projecting over the frame of the blind, A, to the edge of the same on the hinge-side of the blind, A.

Upon the same side of the casing B as the lever D, and directly under the same, is a short metallic lever, E, pivoted to 'said casing B by a pivot through a slot in the said`lever E, as shown in the drawing, and so as that the one end of said lever may be placed over or under the projection on the arm G, by means of which the slats of the blind, A, are adjusted.

The ends of the leversD, E, and E', are within the windows in the casing B, and so as that the blind, A, and the slats of the same, maybe 4operated without openingthe windows.

The operation is such, the blind, A, being closed, that by moving the lever E' in one direction, the blind is released, when, by pressing the lever D backward and downward, the blind, A, is opened, and by the reverse movementof said levers D and E', said blind, A, is closed and fastened, the slats of the blinds being adjustedin any position by the lever E.

We claim as new, and desire to secure by Letters Patent- The bent arm G and slotted lever E, arranged, with relation to the blind-slats and window-casing, in such a manner that their combined action shall adjust said blind-slats in any required position, as herein shown and described.

The above specification of our invention signed by us, this 5th day of December, 1867.

LEVI W. SWAFFORD. EDWARD BUTLER. JOHN R. HESS.

Witnesses:

E. KLEIN, D. F. GRANT. 

